RAD公司的高速数字用户环路HTU-E1可利用现有电话网的用户线(市话电缆)实现高速率(2Mbps)、全双工数字信号传输。在0.5mm四线制双绞线上的传输距离可达4.5Km。 HTU-E1采用2B1Q编码方式,利用均衡、自适应滤波和回声抑制等技术来补偿线路损耗。线路接口符合HDSL ETSI标准和ITU G.703、G.704、G.706、G.732和G.823。 HTU-E1面板具有液晶显示,可以通过按键或串行接口改变参数设置;利用RADview网管系统,可在HP OPENview上进行统一管理和监控。 RAD’s high-speed digital subscriber loop, the HTU-E1, enables high-speed (2Mbps), full-duplex digital signal transmission using subscriber line (local line cable) over existing telephone networks. In 0.5mm four-wire twisted pair transmission distance up to 4.5Km. The HTU-E1 uses 2B1Q encoding to compensate for line loss using techniques such as equalization, adaptive filtering and echo suppression. The line interface complies with the HDSL ETSI standard and ITU G.703, G.704, G.706, G.732 and G.823. HTU-E1 panel with a liquid crystal display, you can change the parameters through the keys or serial interface settings; the use of RADview network management system, HP OPENview unified management and monitoring.